The answer to question Q_27157742 (Eliminate Navigation Pane Jumpiness) was to set the Windows Screen Text Size to 100%.
That worked for me, however, the text in form labels and on buttons became bigger and was often cut off. This is non-intuitive. If anything I would have expected the text to get smaller. This is on a Windows 7 system.
Has anyone else seen this? I'm kind of stuck between a rock and a hard place. Set the screen text size to 100% and eliminate the jumpiness, but then I need to reformat all my forms so the label text can be seen. Or set the screen text size to 125% or 150% and the forms look fine, but the navigation pane jumpiness returns.